feat: Phase 1 — extract the client (web SPA + desktop) to dtoro/oikos-web

Problem: the hexagonal refactor churns the backend tree for nine more
phases; the UI delivery stack (web/ SPA, cmd/desktop Wails wrapper,
compose/web image) must move to its own repo first so doc/layout
rewrites land once on a backend-only tree.

Change:
- New repo git.hubris.network/dtoro/oikos-web (v0.33.0): web/, desktop/
  (updateURL repointed to oikos-web releases), compose/, own CI (web +
  desktop jobs), own deploy script (CI-green gate, TOCTOU guard,
  version-tagged images, prune-to-3), own webhook receiver on :9798 +
  launchd unit, own compose project publishing the same 8091:80.
- Cutover executed on mac-mini in order: oikos stack's web service
  stopped+removed, oikos-web project brought up on 8091; outer Caddy
  untouched (targets the published port) — serving + Authentik flow +
  /wails 404 quirk verified post-cutover.
- Stripped from oikos: web/, cmd/desktop/, compose/web/, desktop CI
  workflow, ci.yml web job, Makefile ui/desktop/desktop-package/install
  targets, the compose web service, oikos-web from deploy.sh's fallback
  prune list; wails + go-keyring dropped from go.mod, vendor synced.
- README / CONTRIBUTING / AGENTS.md / .agents dev+operations docs now
  point at the new repo; mbse + mascot design docs carry a path note.

Risk: production SPA serving depends on the new pipeline now; rollback
is versioned-image re-up of the old web service from a pre-split
checkout (port 8091). Desktop builds installed before the split still
check dtoro/oikos releases — one manual reinstall, noted in the
oikos-web release notes.

Verification: go vet, make test (race), make generate-check, golangci
(no new findings; baseline down 400→365); post-cutover curls —
localhost:8091 200, /wails/runtime.js 404, outer Caddy 302 Authentik.

web/node_modules/bits-ui/dist/bits/switch/switch.svelte.d.ts

@@ -0,0 +1,73 @@
+import { type ReadableBoxedValues, type WritableBoxedValues } from "svelte-toolbelt";
+import type { BitsKeyboardEvent, BitsPointerEvent, RefAttachment, WithRefOpts } from "../../internal/types.js";
+interface SwitchRootStateOpts extends WithRefOpts, ReadableBoxedValues<{
+    disabled: boolean;
+    required: boolean;
+    name: string | undefined;
+    value: string;
+}>, WritableBoxedValues<{
+    checked: boolean;
+}> {
+}
+export declare class SwitchRootState {
+    #private;
+    static create(opts: SwitchRootStateOpts): SwitchRootState;
+    readonly opts: SwitchRootStateOpts;
+    readonly attachment: RefAttachment;
+    constructor(opts: SwitchRootStateOpts);
+    onkeydown(e: BitsKeyboardEvent): void;
+    onclick(_: BitsPointerEvent): void;
+    readonly sharedProps: {
+        "data-disabled": "" | undefined;
+        "data-state": "checked" | "unchecked";
+        "data-required": "" | undefined;
+    };
+    readonly snippetProps: {
+        checked: boolean;
+    };
+    readonly props: {
+        readonly id: string;
+        readonly role: "switch";
+        readonly disabled: true | undefined;
+        readonly "aria-checked": "true" | "false" | "mixed";
+        readonly "aria-required": "true" | "false";
+        readonly onclick: (_: BitsPointerEvent) => void;
+        readonly onkeydown: (e: BitsKeyboardEvent) => void;
+        readonly "data-disabled": "" | undefined;
+        readonly "data-state": "checked" | "unchecked";
+        readonly "data-required": "" | undefined;
+    };
+}
+export declare class SwitchInputState {
+    static create(): SwitchInputState;
+    readonly root: SwitchRootState;
+    readonly shouldRender: boolean;
+    constructor(root: SwitchRootState);
+    readonly props: {
+        readonly type: "checkbox";
+        readonly name: string | undefined;
+        readonly value: string;
+        readonly checked: boolean;
+        readonly disabled: boolean;
+        readonly required: boolean;
+    };
+}
+interface SwitchThumbStateOpts extends WithRefOpts {
+}
+export declare class SwitchThumbState {
+    static create(opts: SwitchThumbStateOpts): SwitchThumbState;
+    readonly opts: SwitchThumbStateOpts;
+    readonly root: SwitchRootState;
+    readonly attachment: RefAttachment;
+    constructor(opts: SwitchThumbStateOpts, root: SwitchRootState);
+    readonly snippetProps: {
+        checked: boolean;
+    };
+    readonly props: {
+        readonly id: string;
+        readonly "data-disabled": "" | undefined;
+        readonly "data-state": "checked" | "unchecked";
+        readonly "data-required": "" | undefined;
+    };
+}
+export {};